The Lm747 is a general-purpose dual operational amplifier, the two amplifiers share a common paranoid network and power leads, otherwise their operation is completely independent, other features of the lm747 are: no blocking when the input common model range exceeds the impact of shocks, package flexibility. The lm747c\/lm747E is identical to the lm747\/lm747a except for the lm747c\/ LM747E, which is especially guaranteed in the range of 0 ° C to 70 ° C instead of 55 ° C to 125 ° C.